In which one of the following pollination is autogamous?

• Xenogamy

• Chasmogamy

• Cleistogamy

• Cleistogamy

In angiosperms, functional megaspore develops into

• embryo sac

• ovule

• endosperm

• endosperm

Apomictic embryos in Citrus arise from 

• Synergids

• maternal sporophytic tissue in ovule

• antipodal 

• antipodal 

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

• xenogamy

• geitonogamy

• karyogamy

• karyogamy

Wind pollinated flowers are

• small, brightly coloured, producing large number of pollen grains

• small, producing large number of dry pollen grains

• large, producing abundant nectar and pollen

• large, producing abundant nectar and pollen

Synapsis occurs between 

• a male and female gamete

• mRNA and ribosomes

• spindle fibres and centromere

• spindle fibres and centromere

Cotyledons and testa are edible parts of 

• groundnut and pomegranate

• walnut and tamarind

• french bean and coconut

• french bean and coconut

An example of a seed with endosperm, perisperm and caruncle is 

• Cotton

• coffee

• lily

• lily

159.

Which one of the flowing pairs of plants structures has haploid number of chromosomes?

• Megaspore mother cell and antipodal cells

• Egg cell and antipodal cells

• Nucellus and antipodal cells

• Nucellus and antipodal cells

Unisexuality of flowers prevents

• autogamy, but not geitonogamy

• Both geitonogamy and xenogamy

• geitonogamy, but not xenogamy

• geitonogamy, but not xenogamy